Precalculus (6th Edition) Blitzer

por
Blitzer, Robert F.

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 10

Answer

$12x^3-5x^2-4x-4$
Degree: 3

Work Step by Step

$(-7x^3 + 6x^2 - 11x + 13) + (19x^3 - 11x^2 + 7x - 17) =12x^3-5x^2-4x-4$
For monomials with the same power, you can add their coefficients to combine them.
The degree of a polynomial is the highest power.